Huawei NetCol8000-C User Manual page 185

NetCol8000-C(070-260) In-room Chilled Water Smart
Cooling Product
User Manual
Alar Alarm
m ID Name
a048 Supply air
high
temperature
alarm
Issue 06 (2020-01-13)
Alarm Impact
Severi
ty
standalone
mode.
Critical An alarm is
triggered.
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
address.
4. No smart cooling product
unit is configured as the
master unit.
5. The master unit is powered
off.
6. The software versions of
the smart cooling products
in the group are
inconsistent.
7. The sensor that corresponds
to the temperature and
humidity control type for
the master unit is not
enabled on this smart
cooling product.
1. The temperature sensors or
temperature and humidity
sensors are located in
inappropriate positions.
2. The thermal load power is
high or the cooling capacity
is insufficient.
3. The ambient temperature
exceeds the upper
threshold.
4. The high temperature alarm
threshold is inappropriate.
5. The value detected by the
temperature sensor or
temperature and humidity
sensor is different from the
actual value.
6. The chilled water flow is
insufficient, or the supply
water temperature is high.
7. The chilled water valve is
stuck or faulty.
6 System Operation and Maintenance
Solution
of the smart cooling
product units.
4. Configure one smart
cooling product unit
as the master unit.
5. Power on the master
unit, or configure
another unit as the
master unit.
6. Upgrade the smart
cooling product
software by referring
to the section that
describes the mapping
between the software
and the teamwork
versions in the
upgrade guide.
7. Enable the sensor that
corresponds to the
temperature and
humidity control type
for the master unit on
this smart cooling
product.
1. Adjust the positions of
the temperature
sensors or temperature
and humidity sensors.
2. Add smart cooling
products or contact
Huawei technical
support.
3. Measure the ambient
temperature. Check
whether other causes
exist if the alarm
persists in a long time
after startup.
4. Adjust the high
temperature alarm
threshold.
5. Calibrate or replace
the temperature sensor
or temperature and
humidity sensor.
6. Check the pressure
and temperature of
chilled water.
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